Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75
The AirTAC JSIJ63~80 Adjustable Cylinder JSIJ63X300-75 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø63mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
- BoreØ63 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM18×1.5
- CushionAdjustable, 29 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75
Its hard-anodized aluminum extruded barrel makes it more compact than a same-bore ISO 15552 unit. The external stop screw lets you shorten the extend stroke by up to 75 mm, giving a usable range of 225 to 300 mm without changing the hardware.
The G3/8 port and 29 mm adjustable cushions manage the 30 to 800 mm/s speed range. Note that this plain SKU lacks a magnet, so it cannot take CMSE or DMSE sensors; you would need the -S variant for position detection.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75 Technical Specifications
| Model | Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G3/8 |
| Rod thread | M18×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
Model Code: Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 63 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×300 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Where the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75 Is Used
Conveyor Diverter Tuning
Fine-tune the 225 to 300 mm extend reach on-site to perfectly deflect varying package sizes without swapping the cylinder.
Clamp Position Adjustment
Dial in the exact clamping depth by shortening the extend stroke up to 75 mm, accommodating different material thicknesses on the fly.
Vertical Lift Stops
Lift loads up to roughly 79 kg and adjust the upper stop position externally to match varying rack heights safely.
Is the Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75 the Right Cylinder?
The adjustable stroke is ideal when you want a shared spare across slightly different stroke variants or need to fine-tune the extend endpoint on the machine. Mounting options include FA, LB, TC, TCM1, and TCM2. Because the stroke is 300 mm, you should use external guides to prevent rod bending and manage side loads. Remember that air cushions only decelerate the piston; for holding a load on air loss, add an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSIJ63~80 Adjustable Cylinder JSIJ63X300-75 FAQ
At 0.5 MPa it pushes 1559 N and pulls 1402 N. At 0.7 MPa it pushes 2182 N and pulls 1962 N. The theoretical maximum force is 318 kgf at 1.0 MPa. It features a 63 mm bore, a G3/8 port, an M18x1.5 rod thread, and 29 mm adjustable cushions at both ends.
The external stop screw lets you shorten the extend stroke on-site by up to 75 mm. The nominal 300 mm stroke is the maximum, giving you a usable extend range of 225 to 300 mm. The retract end remains fixed, and this stop mechanism only sets the end position; it does not lock the load.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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